Gear-trains for producing an alternating motion
Red-chalk toothed wheels, racks and a scoop-like segment
Drawn upside-down in red chalk, this leaf studies gear-trains meant to turn continuous rotation into a back-and-forth (alternating) motion. A large spur wheel meshes with toothed racks and a smaller cogwheel, while a fan-shaped toothed segment is sketched below. The catalogue also records studies of scoops or buckets (benne) on the sheet; no text was transcribed for this page.
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Spur wheel meshing with toothed racks
A large toothed wheel engages sawtooth racks and a smaller cogwheel, an arrangement that would drive a reciprocating stroke as the wheel turns. Connecting rods and a vertical standard frame the mechanism.
Fan-shaped toothed segment
Below, a semicircular, fan-shaped segment carries teeth along its curved edge and pivots at its apex, of the kind that could rock to and fro against a pinion.